When you're a venture capitalist investing in startups, it takes about seven years to know if you're doing a good job or not. That's how long it generally takes for a startup to exit and for you to know if you made a great investment or put money into a major flop.

There are a bunch of 20-somethings in New York who are helping source deals for their firms. They're taking board seats and being handed millions of dolalrs to find the best new companies around.

A few 20-somethings have left traditional firms and raised tens of millions of dollars to start their own funds.

We rounded up a list of people who have already accomplished a lot in the New York startup scene. If they keep at it, they could become the next Ron Conways, Fred Wilsons and Bill Gurleys. Max Stoller was formerly an engineer for a startup that was acquired by Groupon. Now he sources deals like Soylent for Lerer Ventures

Age: 23

Title: Senior Associate, Lerer Ventures

Deals led: Soylent, Runscope. Stoller was previously an engineer at HyperPublic, a startup that was acquired by Groupon, and an intern at Foursquare.

Caitlin Strandberg helped launch Flybridge Capital Partner's NYC Office. She sits in on BetterCloud board meetings, and organizes a slew of events for women and up-and-comers in tech.

Age: 25

Title: Associate, Flybridge Capital Partners

Startups she's worked with: Attends board meetings for BetterCloud. Co-hosts Women in VC lunches, breakfasts/events for young VCs in NYC, runs an email group of young VCs in NYC and hosts the Option Pool Party, a big event for up-and-coming tech talent in NYC startups. She was also Flybridge's first NYC hire and helped the firm open the office in 2012.

Jesse Beyroutey previously worked for Insight Venture Partners and is now an associate at IA Ventures. He has a board seat and is an observer at DigitalOcean.

Age: 24

Title: Associate at IA Ventures.

Startups he's involved with: On the board of Updater, and observer at DigitalOcean, Sight Machine, Transcriptic, TransferWise and Twice. He previously worked for Insight Venture Partners.

Page 2 of 5 - Zack Schildhorn led the Shapeways deal for Lux Capital where he's a VP and Director.

Age: 29

Title: Vice President and Director, Operations at Lux Capital

Deals led and board seats: Led Lux Capital's deal for 3D printing company Shapeways where he also serve as a board observer and Sols Systems, another 3D printing company in NYC that's reinventing orthotics and insoles with 3D scanning & printing technologies. Schildhorn is on the board of Sols.

Brittany Laughlin ran a startup, Gtrot, that was funded by Groupon executives. Now she's at Union Square Ventures.

Age: 28

Title: General Manager, Union Square Ventures

What she's accomplished: Laughlin aids in deal sourcing at Union Square Ventures and assists startups in the portfolio. Prior to joining USV she was an entrepreneur who co-founded travel startup Gtrot, which was backed by the Groupon co-founders.

Spencer Lazar worked for Accel Partners and Insight Venture Partners. Now he's a principal at General Catalyst.

Age: 29

Title: Principal, General Catalyst

Deals led: L2, Loyalblocks. Before joining General Catalyst, Lazar worked for Accel Partners and Insight Venture Partners. He also co-founded a startup called Spontaneously.

Weston Gaddy co-founded a Y Combinator startup before joining Bain Capital, where he's sourced deals such as TapCommerce and supports Rent the Runway.

Talia Goldberg is a rising star at Bessemer Venture Partners. Before that, she worked for Foursquare and Simple.

Age: 23

Title: VC at Bessemer Venture Partners

Deals led/board seat or observer: Goldberg has led two deals for BVP that have not yet been announced. Prior to joining Bessemer she participated in First Round Capital's Dorm Room Fund, interned in Foursquare's business development department, and worked with banking startup Simple, which was recently acquired by Spanish bank BBVA for $117 million.

Page 3 of 5 - Stephanie Weiner is still in college but she's already backed a bunch of startups and built a solar-power pontoon boat.

Age: 21

Title: Partner, First Round Capital's Dorm Room Fund

What she's accomplished: Weiner is still in college, but you'd never know it from her resume. She was a founding partner of First Round Capital's Dorm Room Fund at UPenn where she led two deals (Glass-U and Rocketbolt) and helped find many others. She has also served on a student venture fund, The Weiss Tech House Innovation Fund, which listens to multiple student pitches per week and awards grants. Weiner has also interned with Merrill Lynch and Blackstone Group. She's an entrepreneur and has co-created a solar-powered pontoon boat that collects data in the ocean.

Deals led/board seat or observer: Wilson most recently sourced Bond Street, a new startup created by former Spark Capital associate David Haber. It's a small- to medium-size business-lending platform.

Will Gaybrick is a general partner at Thrive Capital, which has invested in startups like Harry's and Instagram.

Age: 29

Title: Partner, Thrive Capital

Deals led/board seat or observer: Gaybrick is the newest partner at Thrive Capital and he sits on the board of Spree and Tic Tail. He's also on the board of two other companies that have not yet been announced. Prior to Thrive, Gaybrick worked for Blackstone then Chris Dixon's startup, Hunch.

Chris Paik joined Joshua Kushner shortly after Thrive Capital was formed. He was there for the Instagram acquisition and has sourced lots of his own deals such as Twitch.

Page 4 of 5 - Age: 27

Title: Partner, Thrive Capital

Deals led/board seat or observer: Paik led Thrive's investment in Twitch and Assembly. He joined Josh Kushner's firm in 2010 shortly after it was founded and has aided in major deals like an investment in Instagram.

Zander Farkas led Greycroft's investment in stealth startup Button and created a group for up-and-coming VCs, Next Gen Dinners.

Age: 28

Title: Venture Investor, Greycroft Partners

Deals led/board seat or observer: Farkas led Greycroft's investment in stealth startup Button. He's a board observer for Wochit, BetterCloud, Merchantry, 9Flats and JW Player. A company he was a board observer for, Tagman, was just acquired. Farkas is also a mentor at Blueprint Health, where he has worked with more than 25 companies and he's an adviser to one of its startups, Luminate Health. Additionally, Farkas created Next Gen Dinners, a series of dinners for up-and-coming VCs in the New York City area.

Katie Frankel manages due diligence, community management and social media for ffVC.

Age: 26

Title: Director of Community, ff Venture Capital

What she's accomplished: Frankel manages due diligence, community management and social media for ffVC. Prior to joining ffVC she was a chief analyst at Trifecta Platform

Kane Hsieh helped RRE Ventures find drone startup Airware. Before that he worked for a robotics company in Las Vegas.

CeCe Cheng launched First Round Capital's Dorm Room Fund and hunts for the best new startups on college campuses.

Age: 28

Title: Director, Dorm Room Fund at First Round Capital

Deals led/board seat or observer: For the past 15 years, Chen has launched and run First Round Capital's Dorm Room Fund, an investment vehicle that works with students at four college campuses to find innovative new startups there. So far, DRF has funded 40 companies.

Nicola Korzenko works closely with startups such as Poptip, Songza, NewsCred, Memoir, Bark + Co and Splash at Lerer Ventures.

Page 5 of 5 - Age: 29

Title: Head of Platform, Lerer Ventures

What she's accomplished: Korzenko is one of the "always-on" advisers to startups at Lerer Ventures. She spends time advocating for portfolio companies with external shareholders and helping founders with business development, fundraising, product feedback, recruiting and more. She works closely with Poptip, Songza, NewsCred, Memoir, Bark + Co and Splash.

BREAKOUT STAR: Nikhil Kalghatgi worked for Softbank Capital. Now he's a partner in a new fund he co-founded, Vast Ventures.

Age: 30

Title: Partner, Vast Ventures

Deals led and board seats: Kalghatgi has led deals for Recombine and Triage in the past month. He sits on the boards of Keychain Logistics, NowthisNews and MobileDay.

BREAKOUT STAR: Mike Brown Jr. left AOL Ventures to raise his own $30 million fund. He's invested in startups like Qwiki and Sailthru

Age: 30

Title: Founder, Bowery Capital

Deals led: mParticle, Wizeline, Codecademy, Sailthru and Moat. Personally invested in Qwiki, a startup that Yahoo bought for tens of millions of dollars.

BREAKOUT STAR: Joshua Kushner founded Thrive Capital and has gone on to raise three funds. The most recent was $150 million. He's invested in startups such as Instagram, Whisper and Warby Parker.

Age: 28

Title: Founder, Thrive Capital and Oscar

Deals led/board seat or observer: Kushner has invested in startups such asInstagram, GroupMe, Harry's, Dwolla, Warby Parker, Whisper and a slew of others. Kushner is also the founder of healthcare company Oscar, which raised $40 million pre-launch.